NEW BRITISH LICHENS. 
27 
veiTucoso-granulose or subdispersed. ; apothecia black, convex, im- 
marginate, often 2 or more connated, concolorous within ; spores 
8- nee, colourless, ellipsoid, simple, 0,006-0,010 m.m, long, 0,0035 
mm. thick; paraphyses not distinct; epithecium somewhat 
greenish-black; hypothecium thick, brown; hymenial gelatine 
bluisli, and then tawny wine-coloured with iodine. 
On dry sandstone rocks. Connemara, Galway (Larbalestier). 
11. Ziecidea subconfusa. Nyl. — Thallus dark greyish above, 
thinly granulato-conc rescent ; apothecia black, convex, colourless 
wdthin; spores 8 nae, colourless, ellipsoid, simple, 0,007-8 m.m. 
long, about 0,0035 m.m. thick ; paraphyses thickish, not very dis- 
tinct; epithecium bluish-infuscate; hymenial gelatine at first 
bluish, and then wine-reddish with iodine. 
On siliceous rocks. Connemara, Galway (Larbalestier), but 
formerly gathered in Stroemoe, Faroe (Rostruj)). 
Differs from L. /uliginosa, Tayl., in the colour of the thallus and 
the rather smaller spores. 
12. Lecidea nigiriiicans. Nyl. — Thallus blackish, opaque, thin, 
rugnlose, areolato- rimose ; apothecia black, plane, subprominent, 
margined, whitish within ; spores 8-nse, colourless, ellipsoid, 
simple, 0,011-12 m.m. long, 0,006 7 m.m. thick; epithecium 
greenish-black; paraphyses distinct, moderate; hypothecium 
colourless ; hymenial gelatine wine-reddisli with iodine. 
On dry argillaceous schistose rocks. Connemara, Galway (Lar- 
balestier). 
Belongs probably to the section of L. eonfusula, Nyl. The 
thallus is entirely green within, and the margin of the apothecia is 
sometimes ciesio-suffused. 
13. Lecidea baliola. Nyl. — Thallus ochraceous-brown, orleaden- 
ochraceous, thin, smooth, rimulose ; apothecia black, plane, sub- 
prominent, margined, concolorous within; spores 8-nie, colourless, 
oblong, simple, 0,008-9 m.m. long, 0,002-3 m.m. thick ; para- 
physes not distinct ; epithecium and hypothecium brown ; hymenial 
gelatine bluish and then wine-red with iodine. 
On siliceous rocks of a stream, associated with Lecanora lacus- 
tris. Connemara, Galway (Larbalestier). 
Belongs to the section of L. expansa. 
14. Lecidea dilutiuscula. N?jl.— This agrees nearly with L. 
infidula, Nyl., but the apothecia are livid or livid-pale, and entirely 
pale within. h?pores ellipsoid, 0,007-0,010 m.m. long, 0,004-6 
m.m. thick ; epithecium and hypothecium colourless. 
On schistose maritime rocks. Originally gathered several years 
ago in Devonshire (Dr. Holl), and again more recently at Con- 
nemara (Larbalestier). 
15. Lecidea umbrinella. FyZ.— Thallus umbrine-brown, thin, 
snbrugulose, rimulose ; apothecia somewhat prominent, plane, 
-submargined, whitish within ; spores fusiform, simple or L septate, 
